pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-23901-Black_as_a_Cole.ps) >>/Users/jc/w/tmp/Tune-23901-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CCD/Black_as_a_Cole.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_23901.log 129903 Log file, useful mostly for debugging
Tune-23901-Black_as_a_Cole.abc 1330 ABC music file with the extracted tune(s)
Tune-23901-Black_as_a_Cole.ps 37390 PostScript
Tune-23901-Black_as_a_Cole.txt 1330 Plain-text file with the extracted tune(s)
Tune-23901-get.log 4509 Log file, useful mostly for debugging
These files should be available for 24 hours.